| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | Apr 4, 2022 | Nov 16, 2021 | 001-35898 |
| 4 | Open Document | Open Filing | FORM 4 | Apr 2, 2021 | Mar 31, 2021 | 001-35898 |
| 4 | Open Document | Open Filing | FORM 4 | Nov 13, 2020 | Nov 11, 2020 | 001-35898 |
| 3 | Open Document | Open Filing | FORM 3 | Nov 13, 2020 | Nov 9, 2020 | 001-35898 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 6, 2019 | Mar 5, 2019 | 001-09750 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 28, 2019 | Feb 26, 2019 | 001-09750 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 1, 2018 | Jun 1, 2018 | 001-09750 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Mar 7, 2018 | Mar 5, 2018 | 001-09750 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 13, 2018 | Feb 12, 2018 | 001-09750 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 1, 2017 | Jun 1, 2017 | 001-09750 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Feb 9, 2017 | Feb 7, 2017 | 001-09750 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jul 18, 2016 | Jun 1, 2016 | 001-09750 |
| 4 | Open Document | Open Filing | FORM 4 | Jun 2, 2015 | Jun 1, 2015 | 001-09750 |
| 3 | Open Document | Open Filing | FORM 3 | Jun 2, 2015 | Jun 1, 2015 | 001-09750 |